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Nano-vibration effect on cell adhesion and its shape.

Yukiko Ito1, Tsuyoshi Kimura, Yusuke Ago

  • 1Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan.

Bio-Medical Materials and Engineering
|November 11, 2011
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Summary

Nano-vibration affects cell adhesion and shape, particularly in mouse embryonic fibroblasts (MEFs). Specific frequencies altered MEF cell morphology and gene expression, suggesting vibration influences cell behavior.

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Area of Science:

  • Cell Biology
  • Biophysics
  • Biomaterials Science

Background:

  • Extracellular physical cues significantly influence cell adhesion.
  • Artificial physical stimulation, such as vibration, is an emerging area of research in cell biology.

Purpose of the Study:

  • To investigate the impact of nano-vibration on the adhesion and morphology of various cell types.
  • To determine the specific effects of vibration frequencies on mouse embryonic fibroblasts (MEFs).

Main Methods:

  • A nano-vibration system was utilized to apply nanometer-scale vibrations.
  • Four cell lines (L929, MEFs, HeLa, HUVECs) were exposed to vibration at 100 Hz and 1 kHz.
  • Cell shape was classified, and gene expression was analyzed using cDNA microarray.

Main Results:

  • Vibration at 100 Hz and 1 kHz did not affect L929, HeLa, or HUVEC cells.
  • 1 kHz vibration significantly increased adherent MEFs and altered their cell shape.
  • Vibration influenced the proportion of filopodia-formed and lamellipodia-formed MEF cells and changed cytoskeleton gene expression.

Conclusions:

  • Nano-vibration can modulate cell adhesion and cell shape determination.
  • MEFs exhibit distinct sensitivity to specific vibration frequencies, impacting their morphology and gene expression.
  • Vibration represents a potential physical stimulus for controlling cell behavior.